PMIC - Voltage Reference
PMIC - Voltage Reference: Precision Power Management Components
Definition & Functionality
PMIC - Voltage References are specialized integrated circuits (ICs) within the Power Management IC (PMIC) category, designed to generate a stable, precise DC voltage regardless of variations in input voltage, load conditions, or temperature. These components serve as critical "voltage standards" for analog and mixed-signal circuits, ensuring accuracy in applications like data converters, sensors, and power supplies.
Types & Key Variations
1. Series Voltage References: Provide a fixed output with low dropout voltage, ideal for battery-powered devices.
2. Shunt Voltage References: Operate like precision Zener diodes, suited for high-accuracy, low-current systems.
3. Adjustable Voltage References: Allow output customization via external resistors, offering design flexibility.
4. Bandgap References: Leverage semiconductor bandgap properties for ultra-stable outputs across temperature ranges.
5. Buried Zener References: Deliver the highest precision (e.g., 0.04%) for metrology or medical equipment.
Selection Guidelines
- Accuracy & Tolerance: Prioritize < 1% tolerance for precision systems (e.g., ADCs).
- Temperature Coefficient (TempCo): Choose <10ppm/ C for environments with thermal fluctuations.
- Noise Performance: Opt for low-noise (<10 Vpp) designs in sensitive analog circuits.
- Package & Power: Match SOT-23 (portable) or SOIC (industrial) packages to your PCB constraints.
- Long-Term Stability: Critical for automotive/industrial apps; verify datasheet aging specs (e.g., 50ppm/1000hr).
Why It Matters
Voltage References are the unsung heroes of reliable electronics, minimizing drift and noise in power rails. From IoT sensor calibration to aerospace systems, selecting the right type ensures optimal performance and longevity. Partner with trusted suppliers (e.g., Texas Instruments, Analog Devices) to source certified components with traceable quality data.
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LM236H-5.0/NOPB
IC VREF SHUNT 2% TO46-3
LT6658AIMSE-2.5#TRPBF
IC VREF SERIES 6V 0.05% 16MSOP
LM431BIM3X/NOPB
IC VREF SHUNT ADJ 1% SOT23-3
LT6654BHS6-2.048#TRPBF
IC VREF SERIES 0.1% TSOT23-6
MAX6190AESA+
IC VREF SERIES 0.16% 8SOIC
TL1431CLP
IC VREF SHUNT ADJ 0.4% TO92-3
5962-8972801EA
PROGRAMMABLE VREF (AD588SQ/883B)
ADR291GT9Z
IC VREF SERIES 0.24% TO92-3
MAX6241AESA+T
IC VREF SERIES 0.02% 8SOIC
LM4041QDEM3-ADJ/NO
IC VREF SHUNT ADJ 1% SOT23-3
AS431BKTR-E1
IC VREF SHUNT ADJ 1% SOT23-5
MAX6175AASA+T
IC VREF SERIES 0.06% 8SOIC
REF3430TIDBVR
3-V, LOW-DRIFT, LOW-POWER, SMALL
LM4040C33FTA
IC VREF SHUNT 0.5% SOT23
AD2702LD
IC VREF SERIES 0.03% 14CDIP
MAX6166AESA+
IC VREF SERIES 0.08% 8SOIC
LM4040DIZ-5.0/LFT1
IC VREF SHUNT 1% TO92-3
CAT102TDI-GT3
IC VREF SHUNT ADJ 1% TSOT23-5
LT6657AHMS8-3#TRPBF
IC VREF SERIES 0.1% 8MSOP
LM4040B30FTA
IC VREF SHUNT 0.2% SOT23